madhatter528

iTrader: (1)

Im looking at getting a set of work emotions for my car

18x8.5 / front
18x9.5 / rear

not sure of the offsets. any help with this would also be good. probably +30 but not sure what the other options are for this wheel.

My question is will this mess up the camber on the car and will i need to get camber correction arms for front or rear? i don't want the tires to wear unevenly which is my concern. Also is any fender rolling necessary for these sizes??

btw if it makes a difference the car is an 06' touring. thanks.

Nano

iTrader: (1)

in those sizes

ideal for me is

+18 to +23 for the rear
+15 to +20 for the front

you need camber correction only if you alter ride height

A Spec Products

iTrader: (25)

Recommended fitment for the Emotion is:

18x8.5+25 F
18x9.5+30 R

This is a conservative fitment but will still maintain stock suspension geometry (unless you do some crazy drop or something).

No fender rolling.

Emotion CR Kai correct?

madhatter528

iTrader: (1)

yeah. thats the right wheel. is the wheel any more concave w/ a bigger offset? i want to maintain a reasonable setup but also want it of course to look good on the car.

madhatter528

iTrader: (1)

bump. on this wheel what is more of a offset going to effect? if i go with a higher/lower offset what will it effect? just how concave the wheel is? will going with a wheel that is more concave effect camber more? and which way does offset work? is a higher number on the offset more lip/concavity or vice versa?

A Spec Products

iTrader: (25)

8.5 will be convex (flat)
9.5 will be concave (curved)

On the CR Kai the offset doesn't affect the face, since the backpad just gets larger.

smellslikecurry

iTrader: (2)

go 18x9.5 +20 front and 18x9.5 +12 rear...slight roll no rolll if your not dropping trust me youll love it

Z1 Performance

iTrader: (564)

Wheel offset and tire size have huge effects on alignment, not just rideheight

As for the size, the 18x8.5 +20 has alot more concavity than the 18x8.5 +30 - just look at the various pictures of my car over the years to see for yourself.

Save yourself the trouble and go for the +20 front and rear. The +12 will severly limit your tire size, and offers a minimal additional concavity vs the +20.

Z1 Performance

iTrader: (564)

18x8.5 +30 front, 18x9.5 +20 rear



18x8.5 +20 front, 18x9.5 +20 rear



it's a substantial difference in person, which is why when they released the +20 front wheels last year, I got them immediately air'd over

Nano

iTrader: (1)

I said camber correction... in theory, camber will be the same whathever offset or wheel you have if you do not alter ride height. (if overall diameter of wheel + tire changes, than it will affect ride height and camber).

Z1 Performance

iTrader: (564)

I don't understand what you mean "in theory". Unless your not planning on putting wheels and tires on the car, the alignment will certainly change as you change offset and tire size. The offset and physical tire dimensions will alter the alignment

Nano

iTrader: (1)

isn't camber the angle the wheel has from horizontal? Where does that angle come from? Imagine a wheel with 0 camber, would changing wheel size or offset change anything?

What determines that angle is the suspension geometry. On the 350z, wheel width and offset in theory should not alter that angle as a 15mm offset difference is not enough to alter camber, neither will a few mm of wider wheels alter anything on the stock setup. On a car with 4-5 degrees of camber, then offset and tire width would alter the suspension geometry(ride-height) and affect camber.


I had almost the same exact camber (within a rediculous margin) between my stock wheels and my BBS wheels (18x8.5 +23 and 18x9.5 +25).

Z1 Performance

iTrader: (564)

yes...and as you postion the wheel further or closer out to the hub mounting surface, or as you add or subtract tire width (ie contact patch), that angle unavoidably changes.

Nano

iTrader: (1)

I had 3 alignments in past 2 weeks, I got to understand the 350z setup pretty well.

for example (considering the same overall diameter of tire+wheel)

stock 8+30 wheel with 225 tires
aftermarket 8.5+24 wheel with 245 tires

the inner position of the wheel is the exact same, only the tire will be 10mm wider in the inner position (since tire is centered, that makes 10mm wider on each side).

10mm difference on the stock setupr (less than 1 degree) will not affect camber.

To affect camber on the stock setup with wheel width and offset you would need to go to completely out of spec stuff. And I'm not even sure it would be significant.

moral : no need of adjustable camber arms on stock suspensions no matter what.